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	Provedor de dados Genet. Mol. Biol. (1) Neotropical Ichthyology (1) Autor Foresti,Fausto (2) Oliveira,Claudio (2) Shimabukuro-Dias,Cristiane Kioko (1) Torres,Rodrigo A. (1) Palavra-chave Fish cytogenetic (2) Karyotype (2) C-banding (1) Chromosome evolution (1) Karyotypic evolution (1) NOR (1) Trichomycterinae (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2004 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Cytogenetic analysis of five species of the subfamily Corydoradinae (Teleostei: Siluriformes: Callichthyidae) Genet. Mol. Biol. Shimabukuro-Dias,Cristiane Kioko; Oliveira,Claudio; Foresti,Fausto. In the present study, five callichthyid species belonging to the subfamily Corydoradinae were karyotyped: three species of Aspidoras and two of Corydoras. The three species of Aspidoras had the same diploid number, 2n = 46 chromosomes, similar karyotypic formulae, with most chromosomes metacentric or submetacentric, single interstitial Ag-NORs and C-band positive segments mainly found in the centromeric position. The comparative analysis of cytogenetic data available for the genus Aspidoras and other species of Corydoradinae suggest that several events of centric fusion occurred in the origin of the species of Aspidoras. The two analyzed species of Corydoras showed high diploid numbers, 2n = 74 in C. sodalis and 2n = 90 in C. britskii. While C. sodalis... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish cytogenetic; Karyotype; NOR; C-banding; Karyotypic evolution. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000400014 Cytotaxonomic diagnosis of Trichomycterus diabolus (Teleostei: Trichomycteridae) with comments about its evolutionary relationships with co-generic species Neotropical Ichthyology Torres,Rodrigo A.; Oliveira,Claudio; Foresti,Fausto. The karyotype and the Ag-NOR location of a sample of Trichomycterus diabolus collected in the córrego Hortelã (Botucatu, São Paulo, Brazil) are described. The species exhibited 2n=56 chromosomes (42 metacentrics, 12 submetacentrics and 2 subtelocentrics) and the nucleolus organizing region located near to the centromere on the long arm of the largest metacentric pair. The presence of 2n=56 chromosomes in T. diabolus is an interesting characteristic since until now all cis-Andean species karyotyped presented 2n=54 chromosomes while almost all trans-Andean species presented different diploid numbers. The possible origin of this unexpected karyotypic form is discussed. Tipo: Info:eu-repo/semantics/article Palavras-chave: Trichomycterinae; Karyotype; Chromosome evolution; Fish cytogenetic. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000300003 Registros recuperados: 2 Primeira ... 1 ... Última

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